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<portlet:resourceurl id="addEntry" var="addUrl" />

<input type="button" value="Add Ajax Call" onclick="ajaxAddEntry('${addUrl}');">

function ajaxAddEntry(addUrl) {	
		
	jQuery.ajax({
 			type: 'GET',
			 url:  addUrl,
			 cache:false,
			 async:true,
			 error: function(){
						 alert('error');
				    },		
			dataType: "text",
			data :{
				data1: "123",
				data2: "456",				
 				},
 			success: function(status) {			
				 alert('response : ' + status);
			 }
		});
}



public class MyPortlet extends MVCPortlet {	

    @Override
    public void serveResource(ResourceRequest resourceRequest, ResourceResponse resourceResponse)
    		throws PortletException {        	
    	
		 try {
			 String resourceID = resourceRequest.getResourceID();

			 if (resourceID.equals("addEntry")) {
				
				System.out.println("here test addEntry");
				
				addEntry(resourceRequest, resourceResponse);
			}
...

}


public JSONObject addEntry(ResourceRequest resourceRequest, ResourceResponse resourceResponse)
			throws Exception {

          String data1 = resourceRequest.getParameter("bookmarkUrl");

}